code: def fit(self, eval_rs=None, predict=None, label=None, **kwargs):
      return self.__call__(eval_rs, predict, label, **kwargs)
  
imports: from typing import Dict
  from transformers import EvalPrediction
  from transformers.trainer_utils import PredictionOutput
  import pandas
  import torch
  import numpy
  from typing import Union
  import json
  import logging
label_desc: Use image node_id 5 for calling the MetricEnsemble obj's underlying member method code with example usage: obj.fit(eval_rs, predict, label) and returns: self